20070103.ba v03_n991.bam.20070103 >From ???@??? Tue Jan 2 21:34:10 2007 -0600 Date: Wed, 3 Jan 2007 03:33:03 GMT From: Old Tube Radios To: Old Tube Radios Subject: BOATANCHORS digest 3991 Message-Id: <20070103033310.0B33B187AC0@srvr1.theporch.com> BOATANCHORS Digest 3991 Topics covered in this issue include: 1) Re: DuMont by "David Thompson" 2) Re: DuMont by Ben Hall 3) Re: DuMont by Bob Roehrig 4) Free Equipment is gone by W4UOC@aol.com 5) Ancient TV's. by "Ken Hickman" 6) Re: SKN by Mike Steussy 7) Re: DuMont by Dan Arney 8) Re: SKN by Richard Dillman 9) Re: SKN - CW is not dead, despite the reports by "Al Parker" 10) Re: National PW dial: why is it called PW? by "JAMES HANLON" 11) Re: DuMont by w8au@sssnet.com 12) Re: DuMont by "JAMES HANLON" 13) Re: DuMont by Chuck McGregor 14) RE: DuMont by "Bill Hawkins" 15) Re: Ancient TV's. by Bob Roehrig 16) Re: National PW dial: why is it called PW? by Niel Wiegand 17) L4 ZM-11B/U Bridge Manual by Jim Zellmer 18) RE: DuMont by "Marty Reynolds' debris field" 19) RE: DuMont / Inductuner by "Marty Reynolds' debris field" ---------------------------------------------------------------------- Message-ID: <02d201c72eb9$d72ebb60$86609a04@yourxb2x7j77gn> From: "David Thompson" To: Old Tube Radios Subject: Re: DuMont Date: Tue, 2 Jan 2007 17:03:30 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit I remember the old Dumont TV Network and both the Capt Video and Atom Squad shows. My first TV was a 21 inch Zenith my mother won for a design at a local Department store. Dumont had an extensive network as both WDSU in New Orleans and WLBT in Jackson, MS carried Dumont. The network started in mid Afternoon and went to about 9PM CST. A few years ago in clearing out a SK's basement AA4RM and I found an old Dumont TV cabinet. Most of the remains had been cleaned out but there was a large round picture tube. As an aside I have a 1940 Emerson wooden (with handle) Table top radio. My Grandfather listened to Fulton Lewis with the news on WOR which was the flagship station for the Mutual Broadcasting Network. The Emerson worked until last year (still lights) but no sound now and I have not had time to look at it. Mutual really got the broadcasts of baseball started nationwide. Dave K4JRB ------------------------------ Message-ID: <459AD6FF.7080201@bellsouth.net> Date: Tue, 02 Jan 2007 16:04:47 -0600 From: Ben Hall MIME-Version: 1.0 To: Old Tube Radios CC: Old Tube Radios Subject: Re: DuMont Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Question for the group. Was it DuMont who was producing O'scopes to the military that infringed on Tek's design/patent? Or was it another company, Jetronix seems to come to mind, that was doing this? Or was it both? At one point, I had one of those Tek-designed, someone-else-built scopes (believe it was a Jetronix), as well as a Tek 543 (which I still have). It was clear that the non-Tek scope was inferior in components and quality of manufacture. It didn't work and I didn't have the time/desire to fix it. So, it was disassembled for the parts that were okay - pots, transformer, etc... I'm *still* using pots from that scope - while not Tek, they were Clarostat which are pretty good. I had another DuMont scope that I sold about a year ago - bought as part of a lot at the local DRMO, sold at the Huntsville Hamfest. Seemed like a pretty good scope. later and 73, ben, KD5BYB jsehring@siouxvalley.net wrote: > > Later, ad his own tv network in NYC/Phila/DC area after WWII. And of course > famous o'scopes...I had some, some 304's & some earlier ones, they all worked FB > ever after 50 yrs, hated to part with 'em due to move & space restrictions. > ------------------------------ Date: Tue, 2 Jan 2007 16:06:54 -0600 (CST) From: Bob Roehrig To: Old Tube Radios Cc: Old Tube Radios Subject: Re: DuMont Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed On Tue, 2 Jan 2007, David Thompson wrote: > As an aside I have a 1940 Emerson wooden (with handle) > Table top radio. My Grandfather listened to Fulton Lewis > with the news on WOR which was the flagship station for the Mutual > Broadcasting Network. The Emerson worked until last year (still lights) but > no sound now and I have not had time to look at it. Mutual really got the > broadcasts of baseball started nationwide. Some years ago the AM station I worked at had MBS. Do they still exist? Bob Roehrig Aurora University Telecom dept. broehrig@aurora.edu K9EUI W9ZGP WD2XSH/19 630-844-4898 fax 630-844-4222 "Nostalgia is a thing of the past" ------------------------------ From: W4UOC@aol.com Message-ID: <32a.29c1984d.32cc3220@aol.com> Date: Tue, 2 Jan 2007 17:09:36 EST Subject: Free Equipment is gone To: Old Tube Radios MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1167775776" -------------------------------1167775776 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit This equipment has been asked for....... I have the following parts that I will provide to the first requestor if you pay the shipping. Viking Valiant II cabinet and front panel. Both need refinishing but no dents, etc (about 10 lbs.) HRO-60 rack mount front panel. .(about 2 lbs.) Tom Koch - W4UOC 8170 Habersham Waters Road Sandy Springs, GA 30350 404-314-6109 -------------------------------1167775776 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ---REMAINDER OF MESSAGE TRUNCATED--- * * This post contains a forbidden message format * * (such as an attached file, a v-card, HTML formatting) * * Mail Lists at theporch.com only accept PLAIN TEXT * * If your postings display this message your mail program * * is not set to send PLAIN TEXT ONLY and needs adjusting * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * -------------------------------1167775776-- ------------------------------ Message-ID: <002801c72e94$7e3098a0$6b9c1f45@rtconline.com> From: "Ken Hickman" To: Old Tube Radios Subject: Ancient TV's. Date: Tue, 2 Jan 2007 17:36:10 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi Gang, Speaking of ancient tv's, I had what I recollect as an Atwater Kent that had a Mallory Inductuner and had a 21 Mc. sound lineup. Before, I believe, the practice of using 4.5 Mc. takeoff for the sound became the practice. Anyway, the tuner tuned continuously from channel 2 to the top vhf channel which included the CAA Air Traffic Control frequencies. I used to monitor the local Tower and Approach Control. (I was one of the controllers). My youngest son got up in the attic when I wasn't looking and seeing those beautiful colored circular disks for the tuning, one rotating clockwise and the other counter clockwise, he spun them fast, hitting the stop and breaking the Inductuner. I think if I had happened upon him when he did that, I don't know what I would have done!!!! That hurt! I had stripped everything off the chassis but the tuner and the 21 Mc sound channel and audio output. If anyone recognizes the tv I refer to and happens to know where I might find one please let me know. I am still looking for the "Pull-Pull" circuit r.f. oscillator I used as my first ham transmitter. (Not Push-Pull!). Ken N5CM ------------------------------ Message-ID: <459AED9F.1090307@cox.net> Date: Tue, 02 Jan 2007 18:41:19 -0500 From: Mike Steussy MIME-Version: 1.0 To: Old Tube Radios Subject: Re: SKN Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Ahoy! Enjoyed SKN here in Northern Virginia. Missed Marty, but was glad to work Al. Had these rigs on the air, all on 40m, which BTW was packed solid all evening. Valiant + NC-303 Drake 2-NT & Knight VFO + R-4B Eico 720 & 722 VFO + Drake 2-B Century/21 Marty is right. Many spastic fists getting much needed practice, including mine. Used half a dozen vintage keys. Need to identify them so I can say what I'm using. HNY to all and thanks to the list owner for hosting us in 2006. 73, Mike AE4R ----- Marty wrote: Was fun being restricted to 10wpm or so. Had conversations that otherwise might not have happened Worked W8UT fm this community too ------------------------------------------------------------------------ ------------------------------ Message-ID: <459AEDD2.8080200@pacbell.net> Date: Tue, 02 Jan 2007 17:42:10 -0600 From: Dan Arney MIME-Version: 1.0 To: Old Tube Radios CC: Old Tube Radios Subject: Re: DuMont Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit In the mid 50's I worked as an ET at the DuMont R&D lab in Santa Monica on the Sparrow I and the prototype of the Sparrow II on the CC&G stage. In the lobby we had an IR seeker head from a Sidewinder, when you walked in the lobby it would beep a horn and flash a sign that said good morning or a non it switched and said afternoon. If you got to close to it then it would beep beep and the Fire light came on. In the process of moving my A**H*** Brother in law decided that all of my TEK scopes were too old about 20 of them plus my old DuMont. After that I went to EDWARDS AFB as a instrumentation tech on the F-101 and F-104 rengine program at the GE Flight test center. Then got reassigned to Ryan Flight test at EAFB on the X-13 Verti-Jet that took off from hanging on a hook on a Fruehauf trailer that was raised to the vertical for launch. By that time I had my pilot license and away I went to the wild blue at three feet off of the ground dusting & spraying etc. for 6 1/2 seasons with a little over 2 seasons of fire bombing mixed in. Then got into the real flying world. Happy New Year to all Hank KN6DI/5 ------------------------------ Message-ID: <27824671.1167782587532.JavaMail.root@mswamui-andean.atl.sa.earthlink.net> Date: Tue, 2 Jan 2007 19:03:07 -0500 (EST) From: Richard Dillman To: Old Tube Radios Subject: Re: SKN Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit >Ahoy! Enjoyed SKN here in Northern Virginia. Missed Marty, but was >glad to work Al. Had these rigs on the air, all on 40m, which BTW was >packed solid all evening. Indeed yes. At K6KPH I had a hard time peeling them apart. My apologies to those I may have missed. Here's the equipment we were running: Transmitting station - Transmitters - Henry HF-5000 commercial transmitter for each frequency (3550kc, 7050kc and 14050kc) throttled back to 1.5kW output. Antennas - Double extended Zepps for 3.5Mc and 7Mc, H-over-2 for 14Mc. All fed with open wire line of course. Receiving station - Receivers - Watkins-Johnson WJ-8718, Kenwood R-5000, another Kenwood R-5000 keying monitor, Kenwood R-1000 on 500kc (which I always guard when I'm on duty even if we don't have the MF transmitter on the air). Antennas: Two TCI-530 omnis, rhombics at 069 and 340 degrees, V beam at 285 degrees, Marconi T for MF. Plus of course various swtich panels for transmitter control, etc. Standing watch at the station is like playing a Wurlitzer theater organ, especially when KSM is on the air, ships are calling and press and weather is being sent. Then it's a regular one man band. I have to say I think I'm one of the most lucky radio guys around. It was great to hear wall-to-wall signals once again when nobody is sending "CQ TEST". I loved hearing everything from the rusty fists to those of obvious ex-professionals. But best of all was the great yooping note of the W7OS "Old Oak Rig". The op on duty there made it sing by stretching out his dashes just like the old days. Well done, OM. It was chilly out at the Pt. Reyes peninsula but the music of Morse warmed the shack like no blazing fireplace could have done. I hereby declare that the reports of the demise of CW have been greatly exaggerated! VY 73, RD Chief Op, KSM/K6KPH ================================= Richard Dillman, W6AWO Maritime Radio Historical Society http://www.radiomarine.org Collector of Harleys, Willys and Radios over 100lbs. ================================= ------------------------------ Message-ID: <069501c72ecc$aacc4bb0$3201a8c0@w8ut> From: "Al Parker" To: Old Tube Radios Subject: Re: SKN - CW is not dead, despite the reports Date: Tue, 2 Jan 2007 19:18:16 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi folks, Well, I'll jump in here since I've been identified twice. Marty & I had been trying to get together all PM ystdy, I finally found him after 5PM, knowing abt where he'd be. Then Mike tail-ended, glad he did, tho' I had to run for supper & couldn't chat long. Ragchewing is the heart of SKN. Marty & I both using old J-38's, mine I've had since I started in 1956. Mike, I hope you had better success with the Century 21 dial rebuild than I've had with my Triton 4's. Been back into it twice, still feels lumpy. I was using an SP-600 rcvr, and "Big Momma" the URT-23B xmtr. Pair of 4CX1500's loaf at 1kw out, a bit more than prudently required, but QRM was tough, particularly with the SP-600. It was my first time using Momma on CW, got a TVI report from the XYL, which hasn't happened on SSB or AM (fundamental overload?). SP-600 has a prod. det. (from K9EUI), but was de-sensed for abt 6-8 seconds after transmitting, sure couldn't do QSK. SKN seems to be a CX for some of us, that's great. I remember when it was a short, ragchew, non-contest, maybe 6-8 hrs long, for the teetotalers. Guess progress is good, but for the QRM. CW forever, 73, ZUT, Al, W8UT New Bern, NC BoatAnchors appreciated here http://www.boatanchors.org http://www.hammarlund.info ----- Original Message ----- From: "Mike Steussy" To: "Old Tube Radios" Sent: Tuesday, January 02, 2007 6:41 PM Subject: Re: SKN > Ahoy! Enjoyed SKN here in Northern Virginia. Missed Marty, but was > glad to work Al. Had these rigs on the air, all on 40m, which BTW was > packed solid all evening. > > Valiant + NC-303 > Drake 2-NT & Knight VFO + R-4B > Eico 720 & 722 VFO + Drake 2-B > Century/21 > > Marty is right. Many spastic fists getting much needed practice, > including mine. Used half a dozen vintage keys. Need to identify them > so I can say what I'm using. HNY to all and thanks to the list owner > for hosting us in 2006. 73, Mike AE4R > > ----- > > Marty wrote: > > Was fun being restricted to 10wpm or so. Had conversations that > otherwise might not have happened > > Worked W8UT fm this community too > > ------------------------------ Message-ID: From: "JAMES HANLON" To: Old Tube Radios Subject: Re: National PW dial: why is it called PW? Date: Tue, 2 Jan 2007 17:56:17 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00C6_01C72E97.4D1CF030" This is a multi-part message in MIME format. ------=_NextPart_000_00C6_01C72E97.4D1CF030 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Jose wrote: I have got a query from a visitor of my WEB site about the National PW=20 dial; why it is called that way. Could somebody shed some light on this? National made two versions of their dial, the PW which was used in the = HRO series of receivers and the NPW which was used in the NC-100/200/240 = receivers. "PW" stands for "Parallel Worm." The shaft of the tuning = capacitor behind the PW dial is Parallel to the panel of the receiver, = and of course the dial is a Worm drive. "NPW" stands for "Non Parallel = Worm." The shaft of the tuning capacitor behind the NPW dial is = perpendicular, or non-parallel, to the panel. =20 Jim, W8KGI ------=_NextPart_000_00C6_01C72E97.4D1CF030 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ---REMAINDER OF MESSAGE TRUNCATED--- * * This post contains a forbidden message format * * (such as an attached file, a v-card, HTML formatting) * * Mail Lists at theporch.com only accept PLAIN TEXT * * If your postings display this message your mail program * * is not set to send PLAIN TEXT ONLY and needs adjusting * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ------=_NextPart_000_00C6_01C72E97.4D1CF030-- ------------------------------ Message-Id: <7.0.1.0.0.20070102195314.02e08680@sssnet.com> Date: Tue, 02 Jan 2007 19:56:04 -0500 To: Old Tube Radios From: w8au@sssnet.com Subject: Re: DuMont Cc: Old Tube Radios Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed At 05:04 PM 1/2/07, Ben Hall wrote: >Question for the group. Was it DuMont who was producing O'scopes to >the military that infringed on Tek's design/patent? It may have been Hickok, (Cleveland) who produced look-alike scopes of the Tek 500 series. They also produced the same style plug-ins.. Even so, you could tell it wasn't quite a Tek. Perry w8au ------------------------------ Message-ID: From: "JAMES HANLON" To: Old Tube Radios Subject: Re: DuMont Date: Tue, 2 Jan 2007 18:13:45 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0034_01C72E99.BE188360" This is a multi-part message in MIME format. ------=_NextPart_000_0034_01C72E99.BE188360 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable WB0EQ/VE6 wrote: "Later, (Dumont) had his own tv network in NYC/Phila/DC area after = WWII." =20 I worked as a "summer relief engineer" at WCPO-TV in Cincinnati for the = summers of 1956, 57, and 58. We had slides for the Dumont Television = Network in our slide box, so the network at one time made it out to at = least Cincinnati. We didn't use them very much, however. We were = mostly an ABC affiliate. That was a fun job for a kid just out of High School (56) and going to = college. One afternoon the Cisco Kid's sidekick, Pancho, showed up in = the studio as a guest on our afternoon, Our Gang Comedy show, and I was = running camera. The host, "Stringbean" was interviewing Pancho, and he = asked him if that 45 on his belt was real. Pancho, who was dark = complected and scarred - nobody did any stunts for him - grinned, said = "Sure, Amigo," pulled it out and fired it! It was loaded with blanks, = but they sure were loud. I don't know what the audio man did, but it = was several minutes before I could hear anything over my intercom = earphones after that shot went off. =20 And then there was Annette Funicello (sp?) when she was a Mouseketeer. = WOW, wattababe! =20 Jim, W8KGI ------=_NextPart_000_0034_01C72E99.BE188360 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ---REMAINDER OF MESSAGE TRUNCATED--- * * This post contains a forbidden message format * * (such as an attached file, a v-card, HTML formatting) * * Mail Lists at theporch.com only accept PLAIN TEXT * * If your postings display this message your mail program * * is not set to send PLAIN TEXT ONLY and needs adjusting * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ------=_NextPart_000_0034_01C72E99.BE188360-- ------------------------------ Message-Id: <6.2.1.2.0.20070102172425.03ad4330@mail.comcast.net> Date: Tue, 02 Jan 2007 17:28:14 -0800 To: Old Tube Radios From: Chuck McGregor Subject: Re: DuMont Cc: Old Tube Radios Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed; x-avg-checked=avg-ok-4A2B26C4 >> the group. Was it DuMont who was producing O'scopes to the military >> that infringed on Tek's design/patent? > >It may have been Hickok, (Cleveland) who produced look-alike scopes of the >Tek 500 series. They also produced the same style plug-ins.. I was told at the time, that the second-sourced Tek look-alikes were the result of federal procurement regulations and political pressures from scope makers who objected to Tek getting all the government business. Sorta like Helena Rubenstein getting an order for R-390A's. The Hickok look-alikes that I saw, looked like the front panel was produced with the same silk screen, just no Tek logo and no satin anodized undercoat, so that they looked rather crude. 73- Chuck N7RHU -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.16.2/613 - Release Date: 1/1/2007 ------------------------------ From: "Bill Hawkins" To: Old Tube Radios Subject: RE: DuMont Date: Tue, 2 Jan 2007 19:48:38 -0600 Message-ID: <000e01c72ed9$4a6ae990$0900a8c0@cyrus> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit >From Stan Griffiths' book "Oscilloscopes - Selecting and Restoring a Classic" published in 1992, under Counterfeit Instruments: "The three companies that produced these copies are Hickok, Jetronix and Lavoie." Hickok copied the B plugin, Jetronics the 535, and Lavoie copied the 545, CA, D and L plugins. This wasn't deliberate piracy, exactly. The U.S. Military solicited bids for equipment with the Tektronix specs. Stan does say that the copies were "vastly inferior." I have a Lavoie CA that looks quite good, but Stan says the pots are noisy and it has a parasitic oscillation in a 543B mainframe. Stan worked for Tektronix and had a large collection of Tek equipment. Haven't heard from him in a while. Now Tek stuff seems to have no value. I remember opening my first 535 and thinking, "This stuff must have been made on another planet." Anyone else remember Stan? Bill Hawkins -----Original Message----- From: owner-boatanchors@theporch.com [mailto:owner-boatanchors@theporch.com] On Behalf Of w8au@sssnet.com Sent: Tuesday, January 02, 2007 6:56 PM To: Old Tube Radios Cc: Old Tube Radios Subject: Re: DuMont At 05:04 PM 1/2/07, Ben Hall wrote: >Question for the group. Was it DuMont who was producing O'scopes to >the military that infringed on Tek's design/patent? It may have been Hickok, (Cleveland) who produced look-alike scopes of the Tek 500 series. They also produced the same style plug-ins.. Even so, you could tell it wasn't quite a Tek. Perry w8au ------------------------------ Date: Tue, 2 Jan 2007 19:50:58 -0600 (CST) From: Bob Roehrig To: Old Tube Radios Cc: Old Tube Radios Subject: Re: Ancient TV's. Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed I remember the Mallory Inductuners. I believe most of them (if not all) were for TV's with the 21 MC IF. We used to use them as a VHF converter ahead of a BC-603. Then set up the push-buttons on the 603 for our local sherrif/police/fire frequencies. Bob Roehrig Aurora University Telecom dept. broehrig@aurora.edu K9EUI W9ZGP WD2XSH/19 630-844-4898 fax 630-844-4222 "Nostalgia is a thing of the past" ------------------------------ Message-ID: <459B0FC3.2010402@aggienetwork.com> Date: Tue, 02 Jan 2007 20:06:59 -0600 From: Niel Wiegand MIME-Version: 1.0 To: Old Tube Radios CC: Old Tube Radios Subject: Re: National PW dial: why is it called PW? Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Jim, But there is no worm gear in a NPW drive. Maybe "Not Parallel Worm"? 73, Niel - W0VLZ > National made two versions of their dial, the PW which was used in the = > HRO series of receivers and the NPW which was used in the NC-100/200/240 = > receivers. "PW" stands for "Parallel Worm." The shaft of the tuning = > capacitor behind the PW dial is Parallel to the panel of the receiver, = > and of course the dial is a Worm drive. "NPW" stands for "Non Parallel = > Worm." The shaft of the tuning capacitor behind the NPW dial is = > perpendicular, or non-parallel, to the panel. =20 > > Jim, W8KGI JAMES HANLON wrote: > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > * ---REMAINDER OF MESSAGE TRUNCATED--- * > * This post contains a forbidden message format * > * (such as an attached file, a v-card, HTML formatting) * > * Mail Lists at theporch.com only accept PLAIN TEXT * > * If your postings display this message your mail program * > * is not set to send PLAIN TEXT ONLY and needs adjusting * > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > ------------------------------ Message-ID: <459B20E5.8070806@ka0vsl.com> Date: Tue, 02 Jan 2007 22:20:05 -0500 From: Jim Zellmer MIME-Version: 1.0 To: Old Tube Radios Subject: L4 ZM-11B/U Bridge Manual Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit I picked up a ZM-11B/U Bridge at a local hamfest a while back and would like to find a manual w/schematic for the unit. Does any one out in BA land know where I can find one? BAMA as one, but it is for an earlier unit. Any comments on the unit? TNX ES 73 Jim Zellmer, KA0VSL ------------------------------ Message-ID: <60095.66.56.28.127.1167793385.squirrel@fracas.netboobie.org> Date: Tue, 2 Jan 2007 22:03:05 -0500 (EST) Subject: RE: DuMont From: "Marty Reynolds' debris field" To: Old Tube Radios Cc: "Old Tube Radios" MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit Just passed a Dumont 241 in bsmt. A running 5" example with that cap- studded 5JP1 crt* that turned up in slurpus. I collected 2 since Eastern Air Lines ran a seat-back mag on the dawn of computing. And there was a lead-page foto of the Eniac room & right out in front was a 241 Other 241 went to my bro who's kids messed with it for years as did my kids here. Making green worms Tough devils, both survive juvenile torture - but neither 241 begot single ham** 'rm *I've heard from a Tek collector that Dumont sourced Tek's 1st CRTs as used in 511, etc. **Ask list keeper how I tried roping in a kid. Like fixing one up with a bc-458(?) attached to a skate-board & string. Command set pull-toy. W4KH, where are you - SANITY CHECK! ------------------------------ Message-ID: <60724.66.56.28.127.1167794466.squirrel@fracas.netboobie.org> Date: Tue, 2 Jan 2007 22:21:06 -0500 (EST) Subject: RE: DuMont / Inductuner From: "Marty Reynolds' debris field" To: Old Tube Radios Cc: "Old Tube Radios" MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit Here's a coincidental recent story. Ex-ham bud in Augusta resurects jurrasic TVs. Most recent is a Transvision that turned out to be a 1st-print model A. Had a "Dumont Inductuner*" sed plans which showed 6BC5 rfa. But this booger's inductuner was factory-miswired for a 6BC5 & he emailed HELP. Dang if I hadn't kept an inductuner in bsmt for years. This one with 6AB4 as grounded-grid rfa. Pencil scratching on inductuner sed for a pioneer Crosley. Wrote Augusta connection & voila, mystery solved Transvision had a score of wiring errors. Those fixed & she's finally alive after 60 years a-bornin' 'rm *Mallory, not Dumont, made Inductuners --and-- I did a sligltly later Transvision over here 3 yrs back. Had Standard Coil turret tuner that only came with 4 strip sets. More strip/channel-sets were an optional power accessory ------------------------------ End of BOATANCHORS Digest 3991 ******************************